protected static function _sortObjects(&$a, &$b)
{
$key = self::$sortKey;
for ($i = 0, $count = count($key); $i < $count; $i++) {
if (isset(self::$sortDirection[$i])) {
$direction = self::$sortDirection[$i];
}
if (isset(self::$sortCase[$i])) {
$caseSensitive = self::$sortCase[$i];
}
if (isset(self::$sortLocale[$i])) {
$locale = self::$sortLocale[$i];
}
$va = $a->{$key}[$i];
$vb = $b->{$key}[$i];
if ((is_bool($va) or is_numeric($va)) and (is_bool($vb) or is_numeric($vb))) {
$cmp = $va - $vb;
} elseif ($caseSensitive) {
$cmp = MString::strcmp($va, $vb, $locale);
} else {
$cmp = MString::strcasecmp($va, $vb, $locale);
}
if ($cmp > 0) {
return $direction;
}
if ($cmp < 0) {
return -$direction;
}
}
return 0;
}